Dissolution of Barium from Barite in Sewage Sludges and Cultures of Desulfovibrio desulfuricans.

Applied and Environmental Microbiology
F BaldiE Lanciotti

Abstract

High concentrations of total barium, ranging from 0.42 to 1.58 mg(middot)g(sup-1) (dry weight) were found in sludges of two sewage treatment plants near Florence, Italy. Barium concentrations in the suspended matter decreased as redox potential values changed from negative to positive. An anoxic sewage sludge sample was aerated, and 30% of the total barium was removed in 24 h. To demonstrate that barium was solubilized from barite by sulfate-reducing bacteria, a strain of Desulfovibrio desulfuricans was used to study the solubilization of barium from barite under laboratory conditions. During cell growth with different concentrations of barite from 0.01 to 0.3 g(middot)liter(sup-1) (the latter is the MIC) as the only source of sulfates in the cultures, the D. desulfuricans strain accumulated barium up to 0.58 (mu)g(middot)mg(sup-1) (dry weight). Three times the quantity of barium was dissolved by bacteria than in the uninoculated medium (control). The unexpectedly low concentration of soluble barium (1.2 mg of Ba(middot)liter(sup-1)) with respect to the quantity expected (109 mg of Ba(middot)liter(sup-1)), calculated on the basis of the free H(inf2)S evolved from the dissimilatory reduction of sulfate from barite, was probably ...Continue Reading

References

Dec 1, 1989·Bulletin of Environmental Contamination and Toxicology·E LanciottiA Mugelli
Jan 1, 1985·Annual Review of Public Health·E J CalabreseC Sacco
Feb 1, 1994·Applied and Environmental Microbiology·G M WolfaardtD E Caldwell
Mar 1, 1989·Biotechnology and Bioengineering·L A Figueroa, J A Silverstein

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Citations

May 24, 2011·Applied and Environmental Microbiology·Christopher G StruchtemeyerMostafa S Elshahed
Jan 25, 2005·Applied Microbiology and Biotechnology·Douglas M YoungKimberly L Ogden
Dec 30, 2017·Environmental Science and Pollution Research International·Qinhui LuGuangle Qiu
Mar 15, 2015·Journal of Environmental Sciences (China)·Linjun YaoAllen Jobson
Sep 25, 2018·Chemosphere·Cássio Francisco Moreira de CarvalhoPaulo Roberto da Rocha Júnior
May 20, 2018·Chemosphere·Paulo Roberto Cleyton de Castro RibeiroMauro César Pinto Nascimento
Nov 2, 2016·Environmental Science & Technology·Nithavong CamLaure Cordier
Jul 1, 2008·Journal of Microbiological Methods·S GüntherS Müller
Nov 21, 2009·Journal of Hazardous Materials·M L ChávezT A García

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